batch type microwave vacuum dried fruit machine

Microwave dryer for food is an electromagnetic wave whose frequency is between 300MHZ~300GHZ and wavelength is between 1mm ~1m. the characteristics of batch type microwave vacuum dried fruit machine usually shows penetration, reflection and absorption . For glass, plastic and porcelain, batch type microwave vacuum dried fruit machine will penetrate it without being absorbed. For water and food, it will absorb microwave and heating by itself. For metal material, Shandong Leader Machinery Co.,ltd. will reflect the microwave.Microwave dryer for food drying : Water molecule is polar molecule, it will change its polarity and friction motion caused by the effect of high speed change of high frequency electormagnetic field. Then the microwave electromagnetic filed energy can be converted into heat energy and achieve the purpose of drying. Due to the strong penetrability, Microwave dryer for food can heat up the material outside and inside simultaneously and evenly, so that won't appear the condition that the outsie dry but inside wet. The formation of body heat source state shortens the time of heat conduction and save a lot of drying time.Shandong Leader Machinery Co.,ltd. Microwave sterilization temperature is from 70℃~105℃, period is from 90 seconds ~180 seconds. Microwave thermal effects can change the bacterial protein and make bacteria to die owing the loss of nutrients, reproduction and survival.Meanwhile, Shandong Leader Machinery Co.,ltd. Microwave eletromagnetic field can make normal growth and stability of the genetic breeding of bacteria nucleic acid and deoxyribonucleic acid number of hydrogen bonds slack, breakage and recombination, Shandong Leader Machinery Co.,ltd. thereby inducing genetic mutations, chromosomal aberratiuons and even rupture.

As compared with conventional drying methods, which are heating from the outside to the inside by heat conduction, microwave show so-called volume heating with the following advantages:

• a temperature gradient directed towards the surface, i.e. temperatures inside are higher than outside, giving rise to a higher partial pressure that drives the evaporating liquid to the surface
• consequently, the superficial layer does not dry up completely and the surfaces remain permeable
• the liquid evaporating inside the product is emitted through the porous structure of the solid material’s macro-capillary system, resulting in a high drying velocity
• the heating of water and most organic solvents occurs selectively - due to the greater dielectric losses of water as compared to the product to be dried
• swift and thorough drying of moist products with low thermal conductivity
• static drying of thick layers without frictional losses
• high total efficiency of energy application
• high-speed control of the energy transport
• short processing times, i.e. suitable for automated manufacturing

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公司名称] Equipment effect at once, power adjustable, transmission speed adjustable, no thermal inertia residues, compare with the convenentional process equipment to save energy by 50%; Microwave dryer for food Make the material itself become body heat source state, owing without heat transfer process, batch type microwave vacuum dried fruit machine can achieve the drying teperature within a very short time;Becaused of the strong penetrability, batch type microwave vacuum dried fruit machine can heat up the materal inside and outside stimutalouly and evenly and will not appear the conditon that the outsie dry but inside wet;Shandong Leader Machinery Co.,ltd. Microwave can fast sterilize nder low temperature sterilization, so the material can store for a long time without mildew;Due to the fast drying speed , Microwave dryer for food can maximally save the activity of the materials, nutrition ingredient and the original color;Shandong Leader Machinery Co.,ltd. Owing to microwave leakage controlled in metal drying chamber and the waveguide, there is no radiation damage and harmful gas emissions, meanwhile, batch type microwave vacuum dried fruit machine wouldn't product waste heat and dust pollution, so microwave drying is an efficient and economic enviromental drying mode.

If you have any demand about microwave drying equipment and edible oil refining equipment, pls feel free contact us any time.
Email:sales21@ldfoodmachine.com
Whatsapp:+86 13064099546
Skype:leaderfoodmachine21
Contact:Mandy

NOTE:We can specially design the machine according to your production's features.